Eclipse CycloneDDS Improper Handling of Syntactically Invalid Structure
Priority MEDIUM 46CWE-228Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Eclipse CycloneDDS versions prior to 0.8.0 improperly handle invalid structures, which may allow an attacker to write arbitrary values in the XML parser.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02128 82nd percentileScored 2026-11-07
Fix Fixed CycloneDDS (Eclipse): 0.8.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Eclipse Foundation | CycloneDDS | before 0.8.0 | 0.8.0 | Patch available | CNA |
- CycloneDDS VendorEclipse Foundation Affected before 0.8.0 Fixed in 0.8.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:eclipse:cyclonedds:*:*:*:*:*:*:*:* | before 0.8.0 | Vulnerable | Eclipse Foundation |
- cpe:2.3:a:eclipse:cyclonedds:*:*:*:*:*:*:*:* Versions before 0.8.0 Vulnerable ·Eclipse Foundation
Remediation
- Fix · CNA CycloneDDS (Eclipse) Fixed in 0.8.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Eclipse CycloneDDS 0.8.0
2 records Highest priority Priority MEDIUM 2 MEDIUM
Other records, highest priority first
- TI-2021-16043 Eclipse CycloneDDS Write-what-where ConditionPriority MEDIUM 46
Timeline
- 2026-10-02 Threatist record created from CVE-2021-38443
- 2026-10-03 Alias added: GHSA-fq6w-j34v-phjr
References
More Eclipse Foundation Cyclonedds vulnerabilities
- TI-2021-16043 Eclipse CycloneDDS Write-what-where Condition CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-38443 · CVE Program
- CVE-2021-38443 · NVD
- FIRST EPSS
- GHSA-fq6w-j34v-phjr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences